Robtex

Up: 216.213.24.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 216.213.25.0/25
Down right: 216.213.25.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.213.25.2	PTR	gatekeeper.duckpondcorp.com
216.213.25.2	A	gatekeeper.melvillepurchasing.com
216.213.25.2	A	mail.richmondtownehomes.com
216.213.25.3	A+PTR	gatekeepera.duckpondcorp.com
216.213.25.3	A	maila.onlineratings.com
216.213.25.3	A	gatekeepera.melvillepurchasing.com